Improving Si Anode Performance by Forming Copper Capped Copper-Silicon Thin Film Anodes for Rechargeable Lithium Ion Batteries

POLAT B. D., Keleş Ö.

ELECTROCHIMICA ACTA, vol.170, pp.63-71, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 170
  • Publication Date: 2015
  • Doi Number: 10.1016/j.electacta.2015.04.131
  • Journal Name: ELECTROCHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.63-71
  • Keywords: Copper-Silicon film, electrochemical impedance analysis, magnetron sputtering, lithium ion batteries, anode, SOLID-STATE AMORPHIZATION, INSERTION/EXTRACTION REACTION, ELECTROCHEMICAL IMPEDANCE, CARBON-FIBER, ELECTRODE, GRAPHITE
  • Istanbul Technical University Affiliated: Yes

Abstract

In this work, we deposit a bare and a Cu capped CuSi films (that contains 10% at. Cu 3 mu m thicknesses) by magnetron sputtering. The samples are galvanostatically tested with C/12 rate: the Cu capped CuSi film delivers 850 mAhg(-1) after 30th cycles, and it retains stable up to 100 cycle with 99% coulombic efficiency, whilst the bare CuSi film performs a gradual decrease in capacity over 100 cycles.